can: mscan: remove obsolete variable open_time

The variable open_time in the struct mscan_priv was used to protect
mscan_do_set_mode() only to be called, if the interface is up. Now the CAN
device infrastructure takes care of this.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 2b104d5..e6b4095 100644 (file)
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -517,12 +517,8 @@ static irqreturn_t mscan_isr(int irq, void *dev_id)
 
 static int mscan_do_set_mode(struct net_device *dev, enum can_mode mode)
 {
-       struct mscan_priv *priv = netdev_priv(dev);
        int ret = 0;
 
-       if (!priv->open_time)
-               return -EINVAL;
-
        switch (mode) {
        case CAN_MODE_START:
                ret = mscan_restart(dev);
@@ -590,8 +586,6 @@ static int mscan_open(struct net_device *dev)
                goto exit_napi_disable;
        }
 
-       priv->open_time = jiffies;
-
        if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
                setbits8(&regs->canctl1, MSCAN_LISTEN);
        else
@@ -606,7 +600,6 @@ static int mscan_open(struct net_device *dev)
        return 0;
 
 exit_free_irq:
-       priv->open_time = 0;
        free_irq(dev->irq, dev);
 exit_napi_disable:
        napi_disable(&priv->napi);
@@ -627,7 +620,6 @@ static int mscan_close(struct net_device *dev)
        mscan_set_mode(dev, MSCAN_INIT_MODE);
        close_candev(dev);
        free_irq(dev->irq, dev);
-       priv->open_time = 0;
 
        return 0;
 }

diff --git a/drivers/net/can/mscan/mscan.h b/drivers/net/can/mscan/mscan.h
index b43e9f5..af2ed8b 100644 (file)
--- a/drivers/net/can/mscan/mscan.h
+++ b/drivers/net/can/mscan/mscan.h
@@ -281,7 +281,6 @@ struct tx_queue_entry {
 struct mscan_priv {
        struct can_priv can;    /* must be the first member */
        unsigned int type;      /* MSCAN type variants */
-       long open_time;
        unsigned long flags;
        void __iomem *reg_base; /* ioremap'ed address to registers */
        u8 shadow_statflg;